includes/wikiengine/Parse/Mediawiki/Image.php
author Dan
Sun, 01 Jul 2007 14:51:33 -0400
changeset 35 efae425e9b98
parent 1 fe660c52c48f
permissions -rw-r--r--
Finally implemented the new image tag code
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<?php
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/**
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*
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* Parses for image placement.
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*
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* @category Text
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*
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* @package Text_Wiki
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*
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* @author Paul M. Jones <pmjones@php.net>
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*
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* @license LGPL
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*
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* @version $Id: Image.php,v 1.5 2005/09/12 11:34:44 toggg Exp $
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*
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*/
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/**
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*
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* Parses for image placement.
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*
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* @category Text
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*
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* @package Text_Wiki
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*
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* @author Paul M. Jones <pmjones@php.net>
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*
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*/
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class Text_Wiki_Parse_Image extends Text_Wiki_Parse {
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    /**
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     * URL schemes recognized by this rule.
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     *
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     * @access public
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     * @var array
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    */
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    var $conf = array(
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        'schemes' => 'http|https|ftp|gopher|news',
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        'host_regexp' => '(?:[^.\s/"\'<\\\#delim#\ca-\cz]+\.)*[a-z](?:[-a-z0-9]*[a-z0-9])?\.?',
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        'path_regexp' => '(?:/[^\s"<\\\#delim#\ca-\cz]*)?'
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    );
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    /**
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    *
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    * The regular expression used to find source text matching this
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    * rule.
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    *
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    * @access public
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    *
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    * @var string
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    *
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    */
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    var $regex = '/(\[\[image\s+)(.+?)(\]\])/i';
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    /**
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     * The regular expressions used to check ecternal urls
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     *
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     * @access public
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     * @var string
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     * @see parse()
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     */
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    var $url = '';
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    /**
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     * Constructor.
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     * We override the constructor to build up the url regex from config
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     *
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     * @param object &$obj the base conversion handler
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     * @return The parser object
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     * @access public
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     */
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    function Text_Wiki_Parse_Image(&$obj)
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    {
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        $default = $this->conf;
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        parent::Text_Wiki_Parse($obj);
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        // convert the list of recognized schemes to a regex OR,
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        $schemes = $this->getConf('schemes', $default['schemes']);
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        $this->url = str_replace( '#delim#', $this->wiki->delim,
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           '#(?:' . (is_array($schemes) ? implode('|', $schemes) : $schemes) . ')://'
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           . $this->getConf('host_regexp', $default['host_regexp'])
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           . $this->getConf('path_regexp', $default['path_regexp']) .'#');
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    }
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    /**
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    *
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    * Generates a token entry for the matched text.  Token options are:
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    *
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    * 'src' => The image source, typically a relative path name.
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    *
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    * 'opts' => Any macro options following the source.
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    *
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    * @access public
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    *
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    * @param array &$matches The array of matches from parse().
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    *
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    * @return A delimited token number to be used as a placeholder in
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    * the source text.
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    *
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    */
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    function process(&$matches)
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    {
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        $pos = strpos($matches[2], ' ');
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        if ($pos === false) {
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            $options = array(
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                'src' => $matches[2],
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                'attr' => array());
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        } else {
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            // everything after the space is attribute arguments
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            $options = array(
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                'src' => substr($matches[2], 0, $pos),
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                'attr' => $this->getAttrs(substr($matches[2], $pos+1))
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            );
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            // check the scheme case of external link
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            if (array_key_exists('link', $options['attr'])) {
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                // external url ?
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                if (($pos = strpos($options['attr']['link'], '://')) !== false) {
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                    if (!preg_match($this->url, $options['attr']['link'])) {
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                        return $matches[0];
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                    }
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                } elseif (in_array('Wikilink', $this->wiki->disable)) {
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                        return $matches[0]; // Wikilink disabled
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                }
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            }
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        }
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        return $this->wiki->addToken($this->rule, $options);
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    }
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}
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?>